Rash of surplus plastic noticed around northern France (4-9)
I believe the answer is:
over-confident
'rash of surplus plastic' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'noticed around northern france' is the wordplay.
I cannot really see how this works, but
'around' could be 'o' (I've seen this in other clues) and 'o' is present in the answer.
'northern' could be 'n' (abbreviation e.g. N. Ireland) and 'n' is present in the answer.
'france' could be 'f' and 'f' is present in the answer.
an anagram of 'noticed' is 'coident' which is present in the remaining letters.
This explanation may well be incorrect...
Can you help me to learn more?